Scraper structure for concrete horizontal belt conveying system

Abstract

The utility model discloses a scraper structure for a concrete horizontal belt conveying system, which comprises a first-layer scraper plate and a second-layer scraper plate, the first-layer scraper plate and the second-layer scraper plate are hard plastic plates, are fixedly connected to two sides of an inverted T-shaped metal support plate and are arranged at intervals; flexible rubber scraper blades are arranged on the tops of the first-layer scraper plate and the second-layer scraper plate in the length direction, the portions, close to the two ends, of the metal supporting plate are fixedly connected to two swing rods, the portions, close to the middles, of the two swing rods are hinged to the side wall of the discharging hopper, and the rear ends of the two ends of the two swing rods extend out of vertical strip-shaped holes in the side wall of the discharging hopper and are fixedly connected with a driving shaft. The middle of the driving shaft is hinged to a cylinder rod of an air cylinder, a cylinder base of the air cylinder is hinged to the side wall of the discharging hopper, the hinged position is located below the hinged position of the swing rod and the side wall, and after the air cylinder stretches out, the first layer scraper plate and the second layer scraper plate can abut against the lower left portion of the discharging end of the upper layer belt conveyor at the same time. According to the utility model, the double-layer scraper plate is adopted, so that a better mud scraping effect can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of concrete horizontal conveying technology, and relates to a scraper structure for a concrete horizontal belt conveyor system. Background Technology

[0002] In the prefabrication of highway bridges, the main method for concrete transportation and pouring is the concrete mixer truck + hopper method. This method suffers from long pouring times, significant concrete slump loss, and overlapping operations involving concrete pouring, rebar hoisting, and formwork installation. In recent years, to address these issues, China has introduced a concrete conveying technology using torpedo-shaped concrete mixers and placing booms, which is being widely promoted in smart beam yards. The torpedo-shaped concrete mixer uses a circular track, positioned above the mixing plant and the concrete pouring area. The circular track has a turning radius of 6 meters. Four torpedo-shaped concrete mixers are installed on the track, transporting concrete from the mixing plant to the placing boom along the circular track. Each mixer has a volume of 3 cubic meters. The mixers are operated remotely with multi-function buttons, allowing for multi-point dispensing to accommodate various production conditions. The travel speed is adjustable from 0-60 m / min. Dispensing is done by a 180° rotation, aided by a vibrating motor. The torpedo-shaped concrete mixer travels at 55 m / min on a straight line and 20 m / min on a curved path. The circular track has a straight section of 162m (long side) and a short section of 20m (short side), with a curve length of 18.84m. The time for one loop is 7.56 minutes. The unloading time is 6 minutes. Each trip transports 3 cubic meters of material, resulting in a final efficiency of 2.63 minutes / m². 3 The inventors discovered through on-site investigation that torpedo canisters suffered from a series of defects, including high failure rates, slow operating speeds, and difficulties in cleaning; the use of horizontal conveyor belts for concrete transport solved these problems.

[0003] However, when using a horizontal conveyor belt to transport concrete, a scraper is needed to scrape the material during unloading to prevent concrete from adhering to the belt and dripping onto the equipment. However, the existing scrapers will wear down after long-term use, resulting in poor scraping effect, which in turn causes concrete to fall onto the ground or the frame. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a scraper structure for a horizontal concrete belt conveyor system, which can achieve better scraping effect.

[0005] The technical solution adopted in this utility model is as follows: a scraper structure for a concrete horizontal belt conveyor system, including a first scraper plate and a second scraper plate. The first and second scraper plates are made of rigid plastic plates and are fixedly connected to both sides of an inverted T-shaped metal support plate with a gap. Flexible rubber scraper blades are arranged on the top of the first and second scraper plates along their length. The metal support plate is fixedly connected to two swing rods near both ends. The two swing rods are hinged to the side wall of the discharge hopper near the middle and the two ends extend out of the vertical strip holes on the side wall of the discharge hopper and are fixedly connected to the drive shaft. The middle part of the drive shaft is hinged to the cylinder rod of a cylinder. The cylinder seat of the cylinder is hinged to the side wall of the discharge hopper and the hinge point is located below the hinge point between the swing rod and the side wall. After the cylinder extends, it can simultaneously press the first and second scraper plates against the lower left of the discharge end of the upper belt conveyor.

[0006] Furthermore, after passing through the two scraper plates and the T-shaped metal support plate with corrosion-resistant bolts, the connection is locked and fixed with corrosion-resistant nuts. The two scraper plates and the T-shaped metal support plate are also positioned with locating pins. The scraper plates are provided with stepped holes for receiving bolt heads and nuts. After the stepped holes are sealed, a sealing cover is installed.

[0007] Furthermore, a dust cover is installed above the aforementioned cylinder.

[0008] Furthermore, the top surface of the aforementioned metal support plate is provided with symmetrical sloping surfaces on both sides.

[0009] Furthermore, the aforementioned flexible rubber scraper blade has a cylindrical structure with a T-shaped strip at the bottom. The T-shaped strip is elastically squeezed and inserted into the T-groove at the top of the first or second scraper plate, making installation convenient and quick.

[0010] The beneficial effects of this utility model are as follows: Compared with the prior art, the effects of this utility model are as follows:

[0011] (1) This utility model adopts a double-layer scraper plate, which can play a better role in scraping mud. The hard plastic scraper plate provides better support rigidity. When the flexible plastic scraper blade contacts the belt, it can more stably scrape the concrete attached to the belt, making the scraping stable and reliable. On the other hand, it has a better shock absorption effect, avoiding the scraping effect from deterioration due to excessive vibration. The T-shaped metal support plate provides gap arrangement and facilitates installation.

[0012] (2) The sealing cap after the stepped hole is sealed can prevent cement mortar from entering the stepped hole and corroding the bolts;

[0013] (3) The dust cover can block the falling cement mortar and protect the cylinder;

[0014] (4) The arrangement of the slope surface facilitates the automatic collection and outflow of accumulated mud, and the vibration generated during the belt movement will also help the mud slide off.

[0015] (5) The T-strip and T-slot are used together, making installation convenient and quick, and the connection is reliable and stable after installation. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the belt scraper installation structure;

[0017] Fig. 2 This is a schematic diagram of the scraper blade structure. Detailed Implementation

[0018] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1: As Figs. 1-2As shown, the concrete horizontal belt conveyor system also includes an upper belt unloading scraper 10. The unloading scraper 10 includes a first scraper plate 1001 and a second scraper plate 1002. The first scraper plate 1001 and the second scraper plate 1002 are made of rigid plastic plates and are fixedly connected to both sides of an inverted T-shaped metal support plate 1003 with a gap. Flexible rubber scraper blades 1004 are arranged along the length of the top of the first scraper plate 1001 and the second scraper plate 1002. The metal support plate 1003 is fixedly connected to two swing rods 1005 near both ends. The two swing rods 1005 are hinged to the side wall of the unloading hopper 1006 near the middle and extend both ends out of the rear end of the vertical strip hole in the side wall of the unloading hopper 1006. The drive shaft 1008 is fixedly connected to the cylinder rod of the cylinder 1007. The cylinder seat of the cylinder 1007 is hinged to the side wall of the discharge hopper 1006, and the hinge point is located below the hinge point between the swing rod 1005 and the side wall. After the cylinder 1007 extends, it can simultaneously press the first layer scraper 1001 and the second layer scraper 1002 against the lower left of the discharge end of the upper belt conveyor. The use of double-layer scraper plates can better remove mud. The hard plastic scraper plates provide better support rigidity. When the flexible plastic scraper blades contact the belt, they can more stably remove the concrete adhering to the belt, ensuring stable and reliable scraping. On the other hand, they also provide better shock absorption. To prevent excessive vibration from degrading the scraping effect, a T-shaped metal support plate is used. This provides spacing and facilitates installation. Corrosion-resistant bolts 110 pass through the two scraper blades and the T-shaped metal support plate, and are then secured with corrosion-resistant nuts. The two scraper blades and the T-shaped metal support plate are also positioned using locating pins 1011. The scraper blades have stepped holes for receiving the bolt heads and nuts. Sealing the stepped holes with a cap prevents cement mortar from entering and corroding the bolts. A cylinder controls the extension and retraction of the scraper blades during use or cleaning. This contact allows for cleaning of the scraper blade ends if water enters during contact. The plate has a rinsing function, and the cylinder's extension and retraction maintain a certain elasticity, preventing poor stability of the scraper plate contact due to the fixing method. A dust cover 1009 is installed above the cylinder to block cement mortar from falling and protect the cylinder. The top surface of the metal support plate 1003 has symmetrical slopes on both sides, which facilitates the automatic collection and flowout of accumulated mud. The vibration generated during the belt movement also helps the mud slide off. The flexible rubber scraper blade 1004 has a cylindrical structure with a T-shaped strip 1012 at the bottom. The T-shaped strip 1012 is elastically squeezed and inserted into the T-shaped groove at the top of the first scraper plate 1001 or the second scraper plate 1002, making installation convenient and quick, and ensuring a reliable and stable connection after installation.

[0020] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A scraper structure for a horizontal concrete belt conveyor system, characterized in that, It includes a first scraper plate (1001) and a second scraper plate (1002). The first scraper plate (1001) and the second scraper plate (1002) are made of rigid plastic plates and are fixedly connected to both sides of an inverted T-shaped metal support plate (1003) with a gap. Flexible rubber scraper blades (1004) are arranged along the length of the top of the first scraper plate (1001) and the second scraper plate (1002). The metal support plate (1003) is fixedly connected to two swing rods (1005) near both ends. The two swing rods (1005) are hinged near the middle. A drive shaft (1008) is fixedly connected to the rear end of the vertical strip hole on the side wall of the unloading hopper (1006) with both ends extending out of the side wall. The middle part of the drive shaft (1008) is hinged to the cylinder rod of the cylinder (1007). The cylinder seat of the cylinder (1007) is hinged to the side wall of the unloading hopper (1006), and the hinge is located below the hinge between the swing rod (1005) and the side wall. After the cylinder (1007) extends, it can simultaneously abut the first scraper plate (1001) and the second scraper plate (1002) against the lower left of the discharge end of the upper belt conveyor.

2. The scraper structure for a horizontal concrete belt conveyor system according to claim 1, characterized in that, The first scraper plate (1001), the second scraper plate (1002) and the metal support plate (1003) are fixedly connected by corrosion-resistant bolts (110) and positioned by positioning pins (1011). The first scraper plate (1001) and the second scraper plate (1002) are provided with stepped holes for receiving bolt heads and nuts. The stepped holes are sealed with a sealing cap.

3. The scraper structure for a horizontal concrete belt conveyor system according to claim 1, characterized in that, A dust cover (1009) is installed above the cylinder (1007).

4. The scraper structure for a horizontal concrete belt conveyor system according to claim 1, characterized in that, The top surface of the metal support plate (1003) is provided with symmetrical sloping surfaces on both sides.

5. The scraper structure for a horizontal concrete belt conveyor system according to claim 1, characterized in that, The flexible rubber scraper blade (1004) has a cylindrical structure and a T-shaped strip (1012) is provided at the bottom. The T-shaped strip (1012) is elastically squeezed and inserted into the T-shaped groove at the top of the first scraper plate (1001) or the second scraper plate (1002).

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